Kent · England
East Hill External Mastic
Sealing brickwork movement joints, render, cladding and façade joints in East Hill, with a one-year guarantee on every job. Call for a quick quote.
- Moss and dirt in joints with no sealant left
- Failed seals between different materials
- Leaking joints around cladding and façade panels
What sealant work cannot fix
We will not take on work that won’t last, so here’s what sealant cannot put right:
- Cracked brickwork or render that needs a builder or plasterer
- Rising or penetrating damp from elsewhere in the wall
- Cutting new joints into brickwork, which is building work rather than sealant work
If you are not sure, just ring 0345 464 0079 or email us and we will give you a straight answer before booking.
Surfaces we seal
- Copings & trims
- Render & cladding joints
- Brickwork movement joints
- Façade panels
- Concrete & block
- Joints between brick and frames
About our external mastic in East Hill
Ground-floor and low-level joints are straightforward to reach. Where joints are higher up, tell us about the building when you get in touch and we will confirm what access is needed. We work on concrete & block, façade panels and copings & trims, and people most often call us about brick movement joints where the sealant has split and cracked joints where brick meets render or frames.
External sealant needs dry, clean surfaces, so work around East Hill is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
There’s a 12-month guarantee on every job, whatever its size.
- Location
- East Hill (TN15)
- Region
- Kent
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Outside joints around East Hill
Historic houses like Lullingstone Castle (about 2.2 miles north-west) are a reminder that the area around East Hill has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to Church of Saint Mary the Virgin include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
East Hill is about 5 miles north-east of Sevenoaks, in Kent. East Hill gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our Kent coverage runs to 922 places, East Hill among them. There’s also a page for London, roughly 18 miles from East Hill.
Jobs for external mastic in TN15 is quoted and booked the same way as anywhere else. We cover properties on Cherry Tree Grove, Ashen Grove Road and East Hill Road and the roads around them. If you are just outside East Hill, we cover Knatts Valley (1 mile south-east), Romney Street (1 mile south-west), West Kingsdown (1 mile north-east), Maplescombe (1 mile north) and Woodlands (1 mile south). We also work in nearby towns such as Maidstone (14 miles east), Dartford (7 miles north), Sevenoaks (5 miles south-west), Royal Tunbridge Wells (14 miles south), Gravesend (9 miles north-east) and Tonbridge (10 miles south).
Around East Hill
In East Hill, that means homes and buildings near Kemsing Down and the streets around them. The closest station to East Hill is Shoreham (Kent) station, about 2.1 miles west. A little further out are Sevenoaks Hospital (4 miles south-west) and Otford Heritage Centre (2.8 miles south-west).
What affects the quote in East Hill
Your quote is based on your job. We take into account:
- The product the joint needs
- Access and height
- Mould in or behind the old joints
- How much there is to do
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You’ll know the price before we begin.
Asking for a quote
Photos help, but a description is a good start. Try to tell us:
- How many joints, rooms or windows are involved
- Access, such as stairs, a lift or height
- Any previous sealing or DIY work
- A few pictures by email, if you can
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or send us an email.
Common questions in East Hill
Will you come out to East Hill?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Shoreham (Kent) station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Are you insured?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
Why is there a gap in my brick wall?
Brickwork, render and cladding all move a little, so long walls have planned gaps to take that movement. The gap is sealed with a flexible sealant over backing rod.
What should I tell you?
A short description and the location, plus pictures if you have them. If we need more, we will ask.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Can new sealant go over the old?
No. The old sealant always comes out first, so the new sealant bonds properly.
Is there any odour?
Some sealants have a smell while they cure. Opening a window helps.
Landlords, agents and businesses in East Hill
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
If you manage several properties in or around East Hill, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
When to call us in East Hill
Some movement joints have been pointed up with mortar, often by someone who didn’t know what it was for. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
These are the problems we are asked about most:
- Weeds or debris growing in open joints
- Rain getting behind render or cladding at a joint
- Weathered mastic that no longer stretches
- Joints pointed up with cement by mistake
Rented homes near Shoreham (Kent) station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
What your quote should include
- Who turns up on the day
- Which colour the sealant will be
- What preparation is included
- Whether they’re fully insured
How to look after the new joints
A little care helps the new joints last. Our advice:
- Do not let climbing plants root in the sealant
- Look over the joints every year, ideally after winter
- Leave the joints unpainted unless we’ve said otherwise
- Have failed joints looked at early
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They must stay as flexible joints, never rendered or pointed over.
A joint that has stopped moving pushes the movement elsewhere, usually as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
Nearby places to East Hill
More services for East Hill
Surface by surface
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. The movement joint takes that up, so its sealant has to stay flexible.
The process
We bring everything the job needs with us. Once we’ve agreed what’s being done, the area is protected and the work begins. It normally takes anything from a few hours to several days, depending on the building. For a village or hamlet like East Hill, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Tell us if parking is tricky
- Tell us about access, such as stairs, a lift or high-level joints
- Plan for the work area to be out of bounds to pets and children
Get a quote
Asking for a quote is easy: let us know the job and the location and its rough size. A few pictures by email make the job easier to understand, and we’ll come back to you with a quote.